a) \(\left(x^2+2x+1\right):\left(x+1\right)=\left(x+1\right)^2:\left(x+1\right)=x+1\)
b) \(\left(8x^3-27y^3\right):\left(2x-3y\right)=\left[\left(2x-3y\right)\left(4x^2+6xy+9y^2\right)\right]:\left(2x-3y\right)=4x^2+6xy+9y^2\)
c) \(\left(8x^3+y^3\right):\left(2x+y\right)=\left[\left(2x+y\right)\left(4x^2-2xy+y^2\right)\right]:\left(2x+y\right)=4x^2-2xy+y^2\)
